The universal industrial pressure gauge FM 631 with a 63 mm dial and bottom connection is a reliable measuring instrument designed in compliance with EN 837-1 standards. Its robust stainless steel AISI304 housing with glycerin filling ensures durability and long-term precision, even in demanding industrial environments. Resistant to shocks, vibrations, humidity, and sudden pressure surges, it is ideal for monitoring low-viscosity liquids, vapors, and gases that do not crystallize or corrode copper alloys. The glycerin filling stabilizes the pointer, minimizes wear of moving components under pulsating conditions, and protects the interior from condensation and corrosive atmospheres. With an accuracy class of 1.6, a wide operating temperature range from -40°C to +65°C, and a medium temperature tolerance up to +60°C, this gauge guarantees dependable performance in diverse applications. Featuring a clear plexiglass window, brass connection GZ 1/4″ BSP (EN ISO 228-1), and a precise brass-copper alloy mechanism, it combines functionality with resilience. To ensure optimal operation, the measurement range should be matched to the working pressure: continuous or slowly changing pressure up to 75% of the scale, pulsating pressure up to 60%, and pressure impulses not exceeding the maximum range. This makes the FM 631 an excellent choice for industries seeking accuracy, reliability, and efficiency in pressure monitoring.